The first verse speaks of the immediate, the others of the remote, results of the “fool’s” temper. First, “contention,” then “strokes” or blows, th…

A fool’s mouth is his destruction.— See above on Proverbs 12:13.

A fool's mouth [is] his destruction
The cause of it; for his contentions, and quarrels, and evil speaking, lawsuits …

What mischief bad men do to themselves by their ungoverned tongues!